# @A300-600 SERVICE BULLETIN SUMMARY AIRBUS CUSTOMER SERVICES DIRECTORATE 1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F Fax : (33) 5 61 93 42 51 This summary is for information only and is not approved for modification of the aircraft. 

# MANDATORY MANDATORY MANDATORY
ATA SYSTEM: 57 

### TITLE: WINGS - STRUCTURE - INSPECTION OF MAIN LANDING GEAR SUPPORT RIB 5 LUGS **CONF ALL MODIFICATIONS None REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES During routine maintenance, two A321 aircraft Left Hand (LH) Main Landing Gear (MLG) Rib 5 forward lugs were found ruptured. These had been previously modified as per Service Bulletin A320-57-1118 under Structural Repair Manual limits (Ref. ARS 57-0029). The analysis of the first event has shown that a sealant discrepancy had led to water ingress and then initiated corrosion, leading to cracking. The investigation of the second event has shown that a remaining defect which was not removed during the repair had propagated, resulting in rupture of the lug. In order to maintain Continued Airworthiness of Single Aisle aircraft, a repetitive Detailed Visual Inspection is introduced by Rev. 01 to Service Bulletin A320-57-1166 for all modified and/or repaired aircraft. Due to the similarity between MLG Rib 5 on A300-600 aircraft and that of the A320 aircraft family (same design principle for the lug, same material, same modification or repair principles), a repetitive Detailed Visual Inspection (DVI) or Ultrasonic (SDET) Inspection is also introduced by this Service Bulletin for Gear Rib 5 lugs: - Modified by Service Bulletin A300-57-6106 Rev. 00 to 02 - Repaired by Repair Instruction R57240221 Issue A to G. This repetitive inspection will maintain Airworthiness of all aircraft modified by Service Bulletin and/or repaired by Repair Instruction.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 1 7

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# @A300-600 SERVICE BULLETIN SUMMARY GENERAL EVALUATION EVALUATION TABLE COMPLIANCE MANDATORY (1) CANCELS INSPECTION SB NO POTENTIAL AD YES A/C OPERATION AFFECTED NO RELIABILITY AFFECTED NO PAX COMFORT AFFECTED NO COST SAVING NO ETOPS AFFECTED NO STRUCTURAL LIFE EXTN NO VENDOR SB INVOLVED NO NOTE (1): Service Bulletin must be accomplished. MATERIAL PRICE INFORMATION No Material EFFECTIVITY This Service Bulletin is applicable to this (these) operator(s) :

34Z 77T 83V AAL ABD AHK AIB AMU BCS CES F2I FDX G8E GBG IRA IRM JAL KAC KAL MNB MON MSR MXU OHY QTR SUD TAR THA TMA UPS URS UZB CONCURRENT REQUIREMENTS Service Bulletin A300-57-6106. REFERENCES / REPERCUSSIONS TFU None OEB None AOT None SIL None LINE MAINTENANCE AFFECTED No LIFE LIMIT None OTHER None NATURE OF THE WORK AIRCRAFT YES EQUIPMENT NO HARD NO SOFT NO OBRM NO MANPOWER Task 576112-832-895-001: METHOD 1 - DETAILED VISUAL INSPECTION (DVI) TOTAL MANHOURS 3.00 ELAPSED TIME (HOURS) 3.00

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 2 7

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# @A300-600 SERVICE BULLETIN SUMMARY Task 576112-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) TOTAL MANHOURS 4.00 ELAPSED TIME (HOURS) 4.00 APPENDICES INSPECTION REPORTING FORM

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 3 7

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# @A300-600 SERVICE BULLETIN SUMMARY

**CONF ALL



### A

GEAR RIB FORWARD LUG INNER REAR SPAR

**FWD**



## A LH SHOWN RH SIMILAR

GEAR RIB AFT LUG

D_SB_576112_7_SAAA_01_00 Figure A-USAAA - Sheet 01

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 4 7

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# @A300-600 SERVICE BULLETIN
AIRBUS CUSTOMER SERVICES DIRECTORATE 1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F Fax : (33) 5 61 93 42 51



# MANDATORY MANDATORY MANDATORY
ATA SYSTEM: 57 

### TITLE: WINGS - STRUCTURE - INSPECTION OF MAIN LANDING GEAR SUPPORT RIB 5 LUGS MODIFICATION No.: None This document contains AIRBUS PROPRIETARY INFORMATION and shall at all times remain the property of AIRBUS; no intellectual property right or licence is granted by AIRBUS in connection with any information contained in it. It is delivered on the express condition that said document and the information contained in it shall be treated as confidential, shall not be used for any purpose other than that for which it is hereby delivered. It shall not be disclosed in whole or in part to third parties and shall not be duplicated in any manner (except for the purposes of performing the tasks described hereunder and provided that any recipient of such document shall comply with the conditions herein), without AIRBUS prior written consent. 1. PLANNING INFORMATION **CONF ALL A. EFFECTIVITY (1) Models B4-603 B4-605R B4-620 B4-622 B4-622R C4-605R/F C4-620 F4-605R F4-622R (2) Effectivity by MSN 0284 0301 0307 0317 0321 0336 0344 0348 0351 0358 0361 0365 0380 0388 0401 0405 0408 0411 0414 0417 0464 0466 0477 0479 0505-0508 0511-0513 0515 0517-0518 0521 0525 0529-0530 0532 0536 0540 0543 0546 0553-0561 0563 0566 0569 0572 0575 0577 0579 0581-0582 0584 0602-0605 0607-0614 0617-0618 0621 0623 0625-0633 0635 0637 0641 0643 0645 0657 0659 0662 0664 0666 0668 0670 0673 0675 0677 0679 0681 0683 0685 0688 0692 0694 0696 0699 0701 0703 0705 0707 0709 0711 0713 0715 0717 0719 0721-0750 0752-0764 0766-0775 0777-0794 0797 0799-0841 0845-0878

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 1 7

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# @A300-600 SERVICE BULLETIN (3) Effectivity by Operator The Operator/MSN relationship is provided for information only and is correct at the time of issue in accordance with the information available to AIRBUS. Any future changes resulting from transfer of an aircraft from one operator to another will not be reflected in this list unless the Service Bulletin is revised for another reason. OPERATOR MSN 34Z 0685 77T 0838 83V 0466 0511 0512 0675 AAL 0517 0612 ABD 0529 0557 AHK 0855 0856 0857 0858 0859 0860 0870 0871 AIB 0507 0508 0515 AMU 0677 0743 BCS 0621 0637 0641 0670 0679 0711 0724 0729 0740 CES 0521 0525 0532 0707 0725 0732 0741 0746 0754 0763 F2I 0284 0301 0307 0317 0321 0336 0348 0351 0518 0610 0645 0753 0770 FDX 0358 0361 0365 0388 0417 0477 0479 0530 0536 0543 0555 0559 0572 0575 0579 0581 0611 0613 0625 0630 0633 0657 0659 0664 0668 0688 0709 0713 0715 0726 0728 0735 0736 0738 0742 0745 0748 0752 0757 0759 0760 0761 0766 0768 0769 0771 0772 0774 0777 0778 0779 0780 0781 0789 0790 0791 0792 0793 0794 0799 0800 0801 0802 0803 0804 0873 0874 0875 0876 0877 0878 G8E 0506 0513 GBG 0626 0643 IRA 0632 0696 0723 0727 IRM 0380 0401 0405 0408 0411 0414 0546 0553 0608 0618 0623 0701 0750 0762 0773 JAL 0602 0617 0683 0703 0730 0737 0783 KAC 0344 0673 0694 0699 0719 0721 KAL 0582 0609 0627 0631 0662 0692 0731 MNB 0734 0739 0755 0756 0758 MON 0540 0556 0604 0605 MSR 0561 0607 MXU 0767 0788 0797 0836 0837 OHY 0584 0603 0744 0747 0749 0764 QTR 0554 0560 0614 SUD 0666 0775 TAR 0505 0558 0563 THA 0464 0566 0569 0577 0628 0629 0635 0681 0705 0782 0784 0785 0786 0787 TMA 0872

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 2 7

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# @A300-600 SERVICE BULLETIN

OPERATOR MSN UPS 0805 0806 0807 0808 0809 0810 0811 0812 0813 0814 0815 0816 0817 0818 0819 0820 0821 0822 0823 0824 0825 0826 0827 0828 0829 0830 0831 0832 0833 0834 0835 0839 0840 0841 0845 0846 0847 0848 0849 0850 0851 0852 0853 0854 0861 0862 0863 0864 0865 0866 0867 0868 0869 URS 0733 UZB 0717 0722 (4) Configuration by MSN MSN CONFIGURATION 0284 0301 0307 0317 0321 0336 0344 0348 0351 0358 0361 0365 0380 0388 0401 0405 0408 0411 0414 0417 0464 0466 0477 0479 0505 0506 0507 0508 0511 0512 0513 0515 0517 0518 0521 0525 0529 0530 0532 0536 0540 0543 0546 0553 0554 0555 0556 0557 0558 0559 0560 0561 0563 0566 0569 0572 0575 0577 0579 0581 0582 0584 0602 0603 0604 0605 0607 0608 0609 0610 0611 0612 0613 0614 0617 0618 0621 0623 0625 0626 0627 0628 0629 0630 0631 0632 0633 0635 0637 0641 0643 0645 0657 0659 0662 0664 0666 0668 0670 0673 0675 0677 0679 0681 0683 0685 0688 0692 0694 0696 0699 0701 0703 0705 0707 0709 0711 0713 0715 0717 0719 0721 0722 0723 0724 0725 0726 0727 0728 0729 0730 0731 0732 0733 0734 0735 0736 0737 0738 0739 0740 0741 0742 0743 0744 0745 0746 0747 0748 0749 0750 0752 0753 0754 0755 0756 0757 0758 0759 0760 0761 0762 0763 0764 0766 0767 0768 0769 0770 0771 0772 0773 0774 0775 0777 0778 0779 0780 0781 0782 0783 0784 0785 0786 0787 0788 0789 0790 0791 0792 0793 0794 0797 0799 0800 0801 0802 0803 0804 0805 0806 0807 0808 0809 0810 0811 0812 0813 0814 0815 0816 0817 0818 0819 0820 0821 0822 0823 0824 0825 0826 0827 0828 0829 0830 0831 0832 0833 0834 0835 0836 0837 0838 0839 0840 0841 0845 0846 0847 0848 0849 0850 0851 0852 0853 0854 0855 0856 0857 0858 0859 0860 0861 0862 0863 0864 0865 0866 0867 0868 0869 0870 0871 0872 0873 0874 0875 0876 0877 0878 001

(5) Configuration definition **CONF 001 Config. 001 is valid for all the aircraft given in the effectivity of this Service Bulletin as a standard configuration. (6) Material Effectivity MATERIAL QTY PER A/C SEE NOTES Consumable CMLB01 As required B. CONCURRENT REQUIREMENTS Service Bulletin A300-57-6106.
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 3 7

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# @A300-600 SERVICE BULLETIN
C. REASON (1) History During routine maintenance, two A321 aircraft Left Hand (LH) Main Landing Gear (MLG) Rib 5 forward lugs were found ruptured. These had been previously modified as per Service Bulletin A320-57-1118 under Structural Repair Manual limits (Ref. ARS 57-0029). The analysis of the first event has shown that a sealant discrepancy had led to water ingress and then initiated corrosion, leading to cracking. The investigation of the second event has shown that a remaining defect which was not removed during the repair had propagated, resulting in rupture of the lug. (2) Objective/Action In order to maintain Continued Airworthiness of Single Aisle aircraft, a repetitive Detailed Visual Inspection is introduced by Rev. 01 to Service Bulletin A320-57-1166 for all modified and/or repaired aircraft. Due to the similarity between MLG Rib 5 on A300-600 aircraft and that of the A320 aircraft family (same design principle for the lug, same material, same modification or repair principles), a repetitive Detailed Visual Inspection (DVI) or Ultrasonic (SDET) Inspection is also introduced by this Service Bulletin for Gear Rib 5 lugs: - Modified by Service Bulletin A300-57-6106 Rev. 00 to 02 - Repaired by Repair Instruction R57240221 Issue A to G. (3) Advantages This repetitive inspection will maintain Airworthiness of all aircraft modified by Service Bulletin and/or repaired by Repair Instruction. (4) Operational/Maintenance Consequences None D. DESCRIPTION NOTE: Operators have a choice to perform either a Detailed Visual Inspection (DVI) or an Ultrasonic Inspection (SDET). Refer to the two separate tasks for each Method. To accomplish this Service Bulletin it is necessary to : Task 576112-832-895-001: METHOD 1 - DETAILED VISUAL INSPECTION (DVI) (1) Do a Detailed Visual Inspection (DVI) Task 576112-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) (1) Do an Ultrasonic Inspection (SDET)
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 4 7

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# @A300-600 SERVICE BULLETIN
E. COMPLIANCE (1) Classification MANDATORY: Service Bulletin must be accomplished. (2) Accomplishment Timescale Threshold (since Modification/repair embodiment): 2,500 Flight Cycles (FC) Interval for Detailed Visual Inspection (DVI), repetitive inspection: 550 FC Interval for Ultrasonic Inspection (SDET), repetitive inspection: 1,000 FC For aircraft having exceeded the threshold, a grace period is permitted: 550 FC This Service Bulletin has been classified Mandatory. It is expected that an Airworthiness Directive (AD) published by the European Aviation Safety Agency (EASA) will be issued to confirm this classification. It is anticipated that the AD will confirm the (thresholds and/or intervals and/or date) given above but reference should be made to the AD for confirmation of the mandated accomplishment timescale. F. APPROVAL The technical content of this document is approved under the authority of Design Organization Approval No. EASA.21J.031. If an aircraft listed in the effectivity has a modification or repair embodied that is not of AIRBUS origin, and which affects the content of this Service Bulletin, the operator is responsible for obtaining approval by its airworthiness authority for any adaptation necessary before incorporation of the Service Bulletin. G. MANPOWER The manpower estimates given in this Service Bulletin are based on the direct labor cost to do the work. These estimates assume that the work will be done by experienced personnel, and may need to be revised upwards to suit operator’s circumstances. The estimates do not include the time to prepare, plan or inspect the work. Manufacture and procurement of parts and tools, drying times for paints, sealants, etc., and general administration work are also not included.

Task 576112-832-895-001: METHOD 1 - DETAILED VISUAL INSPECTION (DVI) Get Access 1.00 On Aircraft Do a Detailed Visual Inspection (DVI) 1.00 Close-Up 1.00 TOTAL MANHOURS 3.00 ELAPSED TIME (HOURS) 3.00 Task 576112-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) Get Access 1.00 DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 5 7

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# @A300-600 SERVICE BULLETIN

Task 576112-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) On Aircraft Do an Ultrasonic Inspection (SDET) 2.00 Close-Up 1.00 TOTAL MANHOURS 4.00 ELAPSED TIME (HOURS) 4.00 H. WEIGHT AND BALANCE Not Changed I. ELECTRICAL LOAD DATA Not Changed J. REFERENCES

Aircraft Maintenance Manual (AMM) 06-21-00 32-00-00 32-12-11 Consumable Material List (CML) Elec. Std. Practices Manual (ESPM) 20-55-00 Non Destructive Test Manual (NTM) 57-51-34 K. PUBLICATION AFFECTED None L. INTERCHANGEABILITY/MIXABILITY Not Applicable M. SPARES None

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 6 7

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# @A300-600 SERVICE BULLETIN
2. MATERIAL INFORMATION **CONF ALL A. MATERIAL - PRICE AND AVAILABILITY (1) Procurement Addresses None (2) Price and Availability None B. INDUSTRY SUPPORT INFORMATION AIRBUS will not provide industry support for accomplishment of this Service Bulletin. C. LIST OF COMPONENTS No Kit D. LIST OF MATERIALS - OPERATOR SUPPLIED (1) Consumable Materials Consumable CMLB01 ITEM DESCRIPTION REFERENCE TO CML MAT. No. QTY PER A/C SEE NOTES Solvent General Purpose 11-026 As required Lint-Free Cotton Cloth 19-003 As required (2) Components None (3) Equipment None E. PARTS TO BE RE-IDENTIFIED BY OPERATOR None F. TOOLING (1) Tooling - Price and Availability None (2) Tools None DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 7 7

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# @A300-600 SERVICE BULLETIN (3) Special Tools Refer to NTM 57-51-34, Part 4 and Repair Instruction R57240425 for special tooling information.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 8 7

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# @A300-600 SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS Task 576112-832-895-001 - METHOD 1 - DETAILED VISUAL INSPECTION (DVI) WARNING: MAKE SURE THAT YOU OBEY ALL THE WARNINGS AND ALL THE CAUTIONS INCLUDED IN THE REFERENCED PROCEDURES. CAUTION: ALWAYS OBEY THE PRECAUTIONS THAT FOLLOW TO KEEP ELECTRICAL WIRING IN A SATISFACTORY CONDITION (ELECTRICALLY AND MECHANICALLY SERVICEABLE). WHEN YOU DO MAINTENANCE WORK, REPAIRS OR MODIFICATIONS, ALWAYS KEEP ELECTRICAL WIRING, COMPONENTS AND THE WORK AREA AS CLEAN AS POSSIBLE. TO DO THIS: - PUT PROTECTION, SUCH AS PLASTIC SHEETING, CLOTHS, ETC; AS NECESSARY ON WIRING AND COMPONENTS - REGULARLY REMOVE ALL SHAVINGS, UNWANTED MATERIAL AND OTHER CONTAMINATION. THESE PRECAUTIONS WILL DECREASE THE RISK OF CONTAMINATION AND DAMAGE TO THE ELECTRICAL WIRING INSTALLATION. IF THERE IS CONTAMINATION, REFER TO ESPM 20-55-00. Task Associated Data Zone 733 743 Manpower TOTAL MANHOURS 3.00 ELAPSED TIME (HOURS) 3.00 A. GENERAL (1) Subtask 576112-910-401-001 - STANDARD PRACTICES Manpower Resources Skills AIRFRAME References Aircraft Maintenance Manual (AMM) 06-21-00, Page Block 001 Consumable Material List (CML) (a) For the specification of materials (Mat. No.) given in this Service Bulletin (Refer to Consumable Materials List (CML)). (b) For the identification of zones (Refer to AMM 06-21-00, Page Block 001).

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 9 7

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# @A300-600 SERVICE BULLETIN (2) Subtask 576112-839-401-001 - ADMINISTRATIVE Manpower Resources Skills AIRFRAME (a) Write in the applicable aircraft records that you have done all the work given in this Service Bulletin. B. PREPARATION (1) Subtask 576112-941-401-001 - JOB SET-UP Work Zones and Access Panels Zone Access/Work location 733 743 Manpower Resources Skills AIRFRAME Material necessary to do the job Consumable CMLB01 ITEM DESCRIPTION REFERENCE TO CML MAT. No. QTY PER A/C SEE NOTES Solvent General Purpose 11-026 As required Lint-Free Cotton Cloth 19-003 As required References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301 (a) Make sure that the ground safety locks are in position on the MLG (Refer to AMM 32-00-00, Page Block 301). (b) Open the MLG doors (Refer to AMM 32-12-11, Page Block 301). (c) Put the access platforms in position at zones 733 and 743. (d) Clean the inspection area with: Lint-Free Cotton Cloth 19-003 As required

made moist with: Solvent General Purpose 11-026 As required

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 10 7

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# @A300-600 SERVICE BULLETIN
C. PROCEDURE (1) Subtask 576112-220-401-001 - Do a Detailed Visual Inspection (DVI) Manpower Resources Manhours 1.00 Minimum number of person 1 Subtask elapsed time 1.00 Skills AIRFRAME References Fig. A-UFAAA Inspection Flowchart Sheet 01 Fig. A-UBAAA Detailed Visual Inspection (DVI) of the MLG Support Rib 5 Lugs Sheet 01

Refer to Fig. A-UFAAA Sheet 01 and Fig. A-UBAAA Sheet 01

. (a) Do a visual inspection of the forward lug. Carefully examine the "visible area" and the forward and aft faces of the lug. NOTE: When you do the inspection, look for cracks between the: - 1.00 o’clock and 5.00 o’clock positions on the aft face of the Gear Rib 5 forward lug (carefully examine the 4.00 o’clock position) - 7.00 o’clock and 11.00 o’clock positions on the forward face of the Gear Rib 5 forward lug. (b) If you find a crack(s) contact AIRBUS for instructions before the next flight. Use the INSPECTION REPORTING FORM . (c) If there are no cracks, report Nil findings to AIRBUS. Use the INSPECTION REPORTING FORM . Go to SUBTASK 576112-942-401 001 CLOSE-UP and repeat the inspection within 550 FC. D. TEST None E. CLOSE-UP (1) Subtask 576112-942-401-001 - CLOSE-UP Manpower Resources Skills AIRFRAME

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 11 7

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# @A300-600 SERVICE BULLETIN

References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301 (a) Make sure that the work areas are clean and clear of tools and other items of equipment. (b) Remove the ground safety locks from the MLG (Refer to AMM 32-00-00, Page Block 301). (c) Remove the access platforms. (d) Close the MLG doors (Refer to AMM 32-12-11, Page Block 301).

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 12 7

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# @A300-600 SERVICE BULLETIN
Task 576112-832-896-001 - METHOD 2 - ULTRASONIC INSPECTION (SDET) WARNING: MAKE SURE THAT YOU OBEY ALL THE WARNINGS AND ALL THE CAUTIONS INCLUDED IN THE REFERENCED PROCEDURES. CAUTION: ALWAYS OBEY THE PRECAUTIONS THAT FOLLOW TO KEEP ELECTRICAL WIRING IN A SATISFACTORY CONDITION (ELECTRICALLY AND MECHANICALLY SERVICEABLE). WHEN YOU DO MAINTENANCE WORK, REPAIRS OR MODIFICATIONS, ALWAYS KEEP ELECTRICAL WIRING, COMPONENTS AND THE WORK AREA AS CLEAN AS POSSIBLE. TO DO THIS: - PUT PROTECTION, SUCH AS PLASTIC SHEETING, CLOTHS, ETC; AS NECESSARY ON WIRING AND COMPONENTS - REGULARLY REMOVE ALL SHAVINGS, UNWANTED MATERIAL AND OTHER CONTAMINATION. THESE PRECAUTIONS WILL DECREASE THE RISK OF CONTAMINATION AND DAMAGE TO THE ELECTRICAL WIRING INSTALLATION. IF THERE IS CONTAMINATION, REFER TO ESPM 20-55-00. Task Associated Data Zone 733 743 Manpower TOTAL MANHOURS 4.00 ELAPSED TIME (HOURS) 4.00 A. GENERAL (1) Subtask 576112-910-402-001 - STANDARD PRACTICES Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 06-21-00, Page Block 001 Consumable Material List (CML) (a) For the specification of materials (Mat. No.) given in this Service Bulletin (Refer to Consumable Materials List (CML)). (b) For the identification of zones (Refer to AMM 06-21-00, Page Block 001). (2) Subtask 576112-839-402-001 - ADMINISTRATIVE Manpower Resources Skills NON SPECIFIC

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 13 7

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# @A300-600 SERVICE BULLETIN (a) Write in the applicable aircraft records that you have done all the work given in this Service Bulletin. B. PREPARATION (1) Subtask 576112-941-402-001 - JOB SET-UP Work Zones and Access Panels Zone Access/Work location 733 743 Manpower Resources Skills AIRFRAME Material necessary to do the job Consumable CMLB01 ITEM DESCRIPTION REFERENCE TO CML MAT. No. QTY PER A/C SEE NOTES Solvent General Purpose 11-026 As required Lint-Free Cotton Cloth 19-003 As required References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301 (a) Make sure that the ground safety locks are in position on the MLG (Refer to AMM 32-00-00, Page Block 301). (b) Open the MLG doors (Refer to AMM 32-12-11, Page Block 301). (c) Put the access platforms in position at zones 733 and 743. (d) Clean the inspection area with: Lint-Free Cotton Cloth 19-003 As required

made moist with: Solvent General Purpose 11-026 As required

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 14 7

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# @A300-600 SERVICE BULLETIN
C. PROCEDURE (1) Subtask 576112-832-401-001 - Do an Ultrasonic Inspection (SDET) Manpower Resources Manhours 2.00 Minimum number of person 1 Subtask elapsed time 2.00 Skills AIRFRAME References Non Destructive Test Manual (NTM) 57-51-34 Part 4 Fig. A-UCAAA Ultrasonic Inspection (SDET) of the MLG Support Rib 5 Lugs Sheet 01 Fig. A-UFAAA Inspection Flowchart Sheet 01
Refer to Fig. A-UFAAA Sheet 01 and Fig. A-UCAAA Sheet 01

. (a) Do an Ultrasonic Inspection (SDET) of the forward lug (Refer to NTM 57-51-34 Part 4). NOTE: When you do the Ultrasonic Inspection (SDET) look for indications within the scan area. Refer to Fig. A-UCAAA Sheet 01

. (b) If you find an indication contact AIRBUS for instructions before the next flight. Use the INSPECTION REPORTING FORM . (c) If there are no indications, report Nil findings to AIRBUS. Use the INSPECTION REPORTING FORM . Go to SUBTASK 576112-942-402 001 CLOSE-UP and repeat the inspection within 1000 FC. D. TEST None E. CLOSE-UP (1) Subtask 576112-942-402-001 - CLOSE-UP Manpower Resources Skills AIRFRAME References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 15 7

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# @A300-600 SERVICE BULLETIN (a) Make sure that the work areas are clean and clear of tools and other items of equipment. (b) Remove the ground safety locks from the MLG (Refer to AMM 32-00-00, Page Block 301). (c) Remove the access platforms. (d) Close the MLG doors (Refer to AMM 32-12-11, Page Block 301).

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 16 7

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# @A300-600 SERVICE BULLETIN

**CONF ALL

QUESTION ACTION FINDING ACTION BEFORE FOR FURTHER NO YES

CONTACT AIRBUS

NEXT FLIGHT TO AIRBUS FINDINGS REPORT NIL EMBODIED SB 57−6106 REV 00 TO 02 FOR MLG RIB 5 FWD LUGS THAT HAVE:

INSTRUCTION R57240221 ISSUE A TO G INCORPORATED REPAIR OR

ULTRASONIC (SDET): PERFORM NDT

THRESHOLD GRACE PERIOD: INTERVAL: THRESHOLD: 550 FC 1000 FC 2500 FC VISUAL INSPECTION (DVI): PERFORM DETAILED

THRESHOLD GRACE PERIOD: INTERVAL: THRESHOLD: 550 FC 550 FC 2500 FC

OR

D_SB_576112_7_FAAA_01_04 DETECTED? CRACK/INDICATION

Figure A-UFAAA - Sheet 01 Inspection Flowchart
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 17 7

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# @A300-600 SERVICE BULLETIN

**CONF ALL

VISIBLE AREA GEAR RIB AFT LUG

GEAR RIB FORWARD LUG

VIEW ON FWD FACE OF THE FWD LUG AREA VIEW ON AFT FACE OF THE FWD LUG AREA GEAR RIB FORWARD LUG 12

6 3 9 11 10
8 7 5 4 2 1 12

6 3 9 11 10
8 7 5 4 2 1

12

6 3 9 11 10
8 7 5 4 2 1

12

6 3 9 11 10
8 7 5 4 2 1 REAR SPAR INNER



### A LH SHOWN RH SIMILAR



## A

D_SB_576112_7_BAAA_01_00 Figure A-UBAAA - Sheet 01 Detailed Visual Inspection (DVI) of the MLG Support Rib 5 Lugs
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 18 7

Printed in FRANCE © AIRBUS S.A.S. 2007. All rights reserved.

# @A300-600 SERVICE BULLETIN

**CONF ALL

D_SB_576112_7_CAAA_01_00 VIEW ON AFT FACE OF THE FWD LUG AREA GEAR RIB FORWARD LUG 12

6 3 9 11 10
8 7 5 4 2 1 12

6 3 9 11 10
8 7 5 4 2 1 REAR SPAR INNER



### A LH SHOWN RH SIMILAR



## A **B**
**FWD INBD**  SCAN MARKER GUIDE

SCAN AREA

LOCATE THE SCAN MARKER GUIDE ON THE LOWER EDGE OF THE LUG AS SHOWN 

### B

Figure A-UCAAA - Sheet 01 Ultrasonic Inspection (SDET) of the MLG Support Rib 5 Lugs
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 19 7

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# @A300-600 SERVICE BULLETIN

This Page Intentionally Left Blank

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 20 7

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# @A300-600 SERVICE BULLETIN INSPECTION REPORTING FORM **CONF ALL Use this Inspection Reporting Form to inform AIRBUS of any cracks found.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 1 7

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# @A300-600 SERVICE BULLETIN INSPECTION REPORTING FORM

**CONF ALL

DATE OF INSPECTION: FLIGHT CYCLES: FLIGHT HOURS: OPERATOR: SERVICE BULLETIN NUMBER:
A/C MSN OR REGISTRATION:

YES/NO SHOW POSITION OF FINDING(S) LH WING RH WING RETURN TO:

FAX: +33(0)5 61 93 36 14

LH MLG RIB 5 RH MLG RIB 5 A300−57−6112 AIRBUS C/O SEES2 1 ROND POINT MAURICE BELLONTE 31707 BLAGNAC CEDEX FRANCE

YES/NO SHOW POSITION OF FINDING(S)

FORWARD LUG FORWARD FACE

FORWARD LUG AFT FACE FORWARD LUG FORWARD FACE

FORWARD LUG AFT FACE REPAIR INCORPORATED: DATE AND FC/FH: MOD/SB INCORPORATED: DATE AND FC/FH: TYPE OF INSPECTION: 1. INSPECTION REPORT

NO./ISSUE: NO./ISSUE: DVI US

D_SB_576112_7_AAAA_01_02 Figure A-UAAAA - Sheet 01 Inspection Reporting Form
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 2 7

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# @A300-600 SERVICE BULLETIN REPORTING SHEET 

### TITLE: WINGS - STRUCTURE - INSPECTION OF MAIN LANDING GEAR SUPPORT RIB 5 LUGS MODIFICATION No.: None Please complete the appropriate item (A or B): A - SB WILL BE embodied YES/NO (if NO please comment) If YES, aircraft concerned (as per SB effectivity by default) and planned dates (month/year) of embodiment:

B - SB HAS BEEN embodied on aircraft: Operator comments:
From Airline: Name/Title: Signature: Date: If operational documentation is affected (see Paragraph 1.K of this SB): If information is needed prior to next normal revision or prior to SB embodiment, please indicate required service(s): Either: Modification Operational Impact (MOI), if available YES/NO Or : Intermediate revision YES/NO Important Information: This SB will only be incorporated in your maintenance and operational documentation if this sheet is returned to Airbus and signed by a duly authorised representative. With the next feasible revision, this will result in - Updating of maintenance documentation to show pre and post SB data. - Updating of maintenance and operational documentation to show post SB data after embodiment. If this SB requires previous or simultaneous accomplishment of other SBs, Airbus shall automatically include them in the manual revisions. Refer to SIL 00-037 for detailed information. Please return this completed sheet to: AIRBUS CUSTOMER SERVICES DIRECTORATE 1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE Attn: SDC32 Technical Data and Documentation Services FAX: (+33) 5 61 93 28 06 e-mail: sb.reporting@airbus.com or via your Resident Customer Support Office. Alternatively, SB lists via letters or fax are also accepted.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 1 7

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# @A300-600 SERVICE BULLETIN QUALITY PERCEPTION FORM Use this form to tell us what is your perception of the quality of this Service Bulletin. The reported data that you provide us will be used to analyse areas of difficulties and to take corrective action to further improve the quality of our Service Bulletins. We thank you for the time you have taken in completing this form. (Please rate on a scale of 1 to 4, with 4 being the highest score) - Quality rating of this SB 4321 - Quality rating of the Accomplishment Instructions 4321 - Quality rating of the Illustrations 4321 - Is this SB easy to understand ? Y/N If you have had difficulties in the accomplishment of this SB please quote below the area(s) and give a short description of the issue. Planning Material Instructions X Effectivity X Kit content X Preparation X Reason X List of Materials Operator Supplied X Mod/Inspection X Manpower X Industry support X Test X References X Re-identification X Close-Up X Publication X Tooling X Illustrations Comments:

Operator: Date: Name/Title: Please return this form to: AIRBUS CUSTOMER SERVICES DIRECTORATE 1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE Attn : SEM4 Service Bulletins Management FAX : (33) 5 61 93 42 51 Or via your Resident Customer Support Office.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-6112 REVISION No.: 00 - Jan 13/12 Page: 1 7

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